Preliminary field observations at the Klaza deposit and nearby Kelly and Cyprus porphyry centres, Dawson Range, Yukon
Bibliographic record
Abstract
The Klaza deposit is a structurally controlled, polymetallic gold-silver-base metal intermediate sulphidation epithermal system, located within the Dawson Range Gold Belt, central Yukon. The Klaza deposit has four zones with varying vein complexity, ore grade and interaction with local porphyritic quartz-feldspar ('QFP') dykes. This study aims to develop a clear understanding of the genesis and fluid evolution of the Klaza deposit. Preliminary field observations include that the high gold-grade intervals of stockwork and sheeted quartz pyrite veins display two dominant structural orientations and phyllic (quartz-pyrite-sericite) alteration. Massive quartz-pyrite ± chalcopyrite goldbearing veins cut the stockwork and sheeted veins. Silver-rich base metal sulfide veins at Central Klaza cut both vein types, indicating an early, high grade gold mineralization event followed by a later Ag-rich event. The main mineralization stage is followed by late stage carbonate veins, which are largely unmineralized in the Central Klaza zone, but contain euhedral sphalerite and galena in the Western BRX zone. High resolution re-logging of drill core revealed subtle textural and compositional differences between dykes previously logged as undifferentiated 'QFP' across the Central Klaza zone. Three types of dyke compositions are distinguishable in the field based on quartz phenocryst abundance and cross cutting relationships. A Type 1 mafic dyke is cut by Stage 1 early quartz-pyrite veinlets. The Type 2 felsic dykes are cut by Stage 4 base metal veins, while the Type 3 intermediate dyke is in contact with Type 2 dykes and is uncut by mineralization.
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How this classification was reachedexpand
Full frame machine prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. The Gemma side is a direct model label for every work in the frame, read from the title-only record. The Codex side is a classifier learned from the 10,348 direct Codex labels and calibrated to design-weighted sample rates; fields without enough sample support carry no Codex call. Candidate is the union of the two sides; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels.
Distilled classifier scores by category (both heads)
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.000 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.001 | 0.001 |
| Science and technology studies | 0.001 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.001 | 0.000 |
Machine scores (provisional)
The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.
Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.
score_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from itClassification
machine, unvalidatedMachine predicted; a candidate call from one source (direct Gemma or distilled Codex), not a consensus.
How this classification was reached, model by model and score by score, is at the end of the page under "How this classification was reached".